N = int(input())
member = [tuple(map(int, input().split())) for _ in range(N)]

M = int(input())
cnt = [0 for _ in range(M)]
mentaiko = [tuple(map(int, input().split())) for _ in range(M)]

for a, b in member:
    for i in range(M):
        x, y = mentaiko[i]
        if x <= a and y >= b:
            cnt[i] += 1

m = max(cnt)

if m == 0:
    print(0)
else:
    for i in range(M):
        if cnt[i] == m:
            print(i + 1)